Using the formula M=dx v, Calculate the mass of a liquid with a density of
17.5 g/mL and a volume of 7mL.

Answer:

the sun

Explanation:

can i have brainliest also have a good day

The molecular structure of \(BrF_6^+\) is octahedral. \(BrF_6^+\)  is a cationic compound that is formed by the combination of a bromine atom and six fluorine atoms. Option C .

The Br atom has seven valence electrons, and each F atom has seven valence electrons. Therefore, the total number of valence electrons in the \(BrF_6^+\) ion is 42.

To determine the molecular structure of the ion, we need to first draw its Lewis structure, which shows the arrangement of the atoms and the bonding electrons. In the Lewis structure of \(BrF_6^+\), the Br atom is surrounded by six F atoms, and each F atom is bonded to the Br atom via a single covalent bond. The Br atom also has a positive charge, indicating that it has lost one electron.

The octahedral molecular structure of \(BrF_6^+\) arises from the fact that there are six bonding pairs of electrons and no lone pairs of electrons around the Br atom. The six F atoms are arranged symmetrically around the Br atom, forming an octahedral shape. Therefore, the correct answer is C, octahedral.

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Currents are made by wind blowing over the water.

Currents created by wind are formed through the use of warm and cold air. The warm air becomes lighter through expansion, causing it to rise and transform into a warm air current. Cool air is heavier than the warm air, which makes it move to replace the warm air, thus forming a cool air current.

In short, currents are not made by wind blowing over water, but by the characteristics of warm and cool air acting on one another.

Additionally, the rest of the answers can easily be proven true.

Cold currents do cause nearby coastlines to become colder. This is because these winds blow into the coast and affect the temperature. The process also applies to warm air. Warm air can blow into the coastline and warm the area. (With this, both "Cold currents cause nearby coastlines to be colder," and "Warm currents cause nearby coastlines to be warmer," have been shown to be truthful.)

Oceans more more slowly than wind is also correct. The ocean is an uninterrupted surface which winds can peacefully blow across. This lack of disruption causes the winds to move quickly - much faster than even the ocean itself. The ocean('s) currents move slower than the winds. (Therefore, "Oceans move more slowly than wind," had been proven true.)

Oceans hold more heat than atmosphere on land has a simple explanation: the Sun. As we know, this humongous, fiery star we depend on for survival spreads its sunlight all over Earth. The oceans are no exception. The ocean(s) absorb(s) this sunlight and transform(s) it to heat and energy. Since water has a higher capacity for heat compared to air, it can store larger amounts of heat with less of a change in temperature (than air). (For that reason, "Oceans hold more heat than atmosphere on land," is indeed a factual statement.)

All of the options, apart from Currents are made by wind blowing over the water, have been proven true. With that being said, our answer is clear. (Hope this helps - have a lovely week!)

Answer:

currents are made by wind blowing over the water

Explanation:

In which direction does weather typically move? a. from east to west c. from north to south b. from west to east d. from south to north *this is the next question on the test and the answer is FROM WEST TO EAST*

Which of these describe a warm front?

Warm and cool air mass that are not strong enough to move one another

Cold air meets warm air, fast moving and stormy. Severe weather is likely.

Warm air meets cold air. Slow moving with less severe weather.

Ocean surface temperature is greater than 80F.

*these are the third question answers and there are no brainly answers online, so the answer to this one is, WARM AIR MEETS COLD AIR. SLOW MOVING WITH LESS SEVERE WEATHER.*

hope this helps :)

The key differences between the Articles of Confederation and the U.S Constitution is the article of confederation is sovereignty in states and the constitution  is expand the governments authority.

The document created the better system of government for the new nation is the US constitution.

The Article of confederation , the state have stronger power than the central power and in the US constitution , the power of central government is stronger than the states. The important development was the establishment of three departments. There are three departments of government that is legislative , executive and judicial.

Thus, The key differences between the Articles of Confederation and the U.S. Constitution is the article of confederation is sovereignty in states and the constitution  is expand the governments authority.

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no

Explanation:

i simply answered the question

you didnt ask for it you simply asked if i had it

being mad is no use, same with reporting and taking this down

in thoery my answer is correct

so, dont get mad, dot report, dont take this down

this is my protest

To develop a model that shows roller coaster cart in four different positions on the track : Choose a scale, Gather materials, Design the track, Build the track, Create the roller coaster cart and then Paint and decorate.

To develop a model that shows a roller coaster cart in four different positions on a track, you can follow the given steps:

Choose a scale: Decide on a scale for your model. For example, you could use a scale of 1 inch = 1 foot, or 1 centimeter = 1 meter, depending on the size of model.

Gather materials: Gather materials to build your model, such as foam board, cardboard, or any other materials you have available.

Design the track: Draw the track design on your foam board or cardboard using pencil or pen.

Build the track: Cut out the track using a pair of scissors, and then glue the sections together to create complete track.

Create the roller coaster cart: Create a small cart using materials such as foam board or cardboard, and then attach it to track using small clips or tape.

Paint and decorate: Paint the track and cart, and add any additional decorations you want to make the model more realistic.

When the model is complete, you can use it to discuss changes in the potential, kinetic and thermal energy of cart as it moves along the track.

Potential energy: As the cart moves up the track, it gains potential energy due to its increased height above the ground.

Kinetic energy: As the cart moves down the track, it gains kinetic energy due to  increased speed.

Thermal energy: As the cart moves along the track, it experiences friction with the track and air around it, which can cause it to lose some of its kinetic energy as thermal energy.

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Answer:

I think the first one (not really sure) but just try hehe

To determine the pH of a solution using a pH indicator paper, you need a color chart or a color scale that corresponds to different pH values.

This color chart or scale is used to compare the color of the pH indicator paper after it has been immersed in the solution. The pH indicator paper is impregnated with a universal pH indicator, which is a chemical compound that changes color depending on the acidity or alkalinity of the solution.

The indicator undergoes a chemical reaction with the hydrogen ions (H+) or hydroxide ions (OH-) present in the solution, resulting in a color change.

By comparing the color of the pH indicator paper with the color chart or scale, you can determine the approximate pH of the solution. The color chart usually provides a range of colors corresponding to different pH values, allowing you to match the observed color to the nearest pH value.

In the hypothesis mentioned, the aim is to calibrate a cabbage pH indicator using the pH values obtained from a universal pH indicator. Therefore, in addition to the pH indicator paper and color chart, you would also need a range of solutions with known pH values to establish a calibration curve specific to the cabbage pH indicator.

In summary, to determine the pH of a solution using a pH indicator paper, you need a color chart or scale that correlates the observed color of the pH indicator paper with different pH values. This chart or scale serves as a reference for interpreting the color change and determining the pH of the solution.

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Answer: COLOR KEY

Explanation: CS

For outside treatment:

The cost is a fixed $15,000 per year for the entire 9-year period.

Therefore, the EUAC for outside treatment is simply $15,000.

Comparing the EUAC values, we find that the EUAC for in-house treatment is approximately $6,329, while the EUAC for outside treatment is $15,000.

To calculate the equivalent uniform annual cost (EUAC) of each alternative and determine the most economical option, we need to analyze the costs over the 9-year period.

For in-house treatment:

The cost in the first year is $30,000, and the cost declines by $3,000 each year. We can use the arithmetic gradient formula to calculate the equivalent uniform annual cost.

Using the formula for an arithmetic gradient, the EUAC for in-house treatment can be calculated as follows:

EUAC = C - (G/A) * (1 - (1 + i)^(-n))

Where:

C = Initial cost = $30,000

G = Gradient (decrease per year) = -$3,000

A = Annuity factor (obtained from the interest and annuity table for discrete compounding) for 9 years at 8% MARR = 6.71008 (rounded)

i = Interest rate = 8% = 0.08

n = Number of years = 9

Substituting the values into the formula:

EUAC = $30,000 - (-$3,000/6.71008) * (1 - (1 + 0.08)^(-9))

EUAC ≈ $6,329 (rounded)

For outside treatment:

The cost is a fixed $15,000 per year for the entire 9-year period.

Therefore, the EUAC for outside treatment is simply $15,000.

Comparing the EUAC values, we find that the EUAC for in-house treatment is approximately $6,329, while the EUAC for outside treatment is $15,000.

Since the EUAC for in-house treatment is lower, it is the more economical alternative for processing waste liquids.

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Equilibrium is a state in a chemical reaction where the rate of the forward reaction is equal to the rate of the reverse reaction, resulting in no net change in the concentrations of reactants and products. It is represented by a double arrow (⇌) in chemical equations. In the given equation: H₂O (g) + CO (g) ⇌ H₂(g) + CO₂(g) + 42 KJ

To shift the equilibrium to the right, one or more of the following could occur:

Increasing the concentration of H₂ or CO₂

Decreasing the concentration of H₂O or CO

Increasing the pressure

Removing some of the products (H₂ and CO₂)

Decreasing the temperature

To shift the equilibrium to the left, one or more of the following could occur:

Decreasing the concentration of H₂ or CO₂

Decreasing the pressure

Increasing the temperature

If pressure is increased, the equilibrium will shift in the direction that produces fewer moles of gas. In this case, since there are fewer moles of gas on the right side of the equation (H₂ and CO₂), the equilibrium will shift to the right. If heat is added, the equilibrium will shift in the endothermic direction to absorb the additional heat. In this case, the forward reaction is endothermic (42 KJ on the right side), so the equilibrium will shift to the right to consume the added heat.

If CO is added, the equilibrium will shift to the right to consume the additional CO.The concentration of H₂O and CO₂ will increase, while the concentrations of H₂ and CO will decrease until a new equilibrium is reached.

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After 10 days, the anticipated BOD content would be around 0.28125 mg/L.

To estimate the BOD (Biochemical Oxygen Demand) concentration after 10 days, we can use the first-order kinetics equation for BOD decay:

BOD(t) = BOD(0) * e^(-k * t)

We can rearrange the equation and solve for BOD(10) after 10 days:

BOD(10) = BOD(0) * e^(-k * 10)

BOD(t) is the BOD concentration at time t

BOD(0) is the initial BOD concentration

k is the kinetic rate constant

t is the time

Substituting the given values:

BOD(10) = 9 mg/L * e^(-0.15/d * 10)

Using a calculator or mathematical software to evaluate the exponential term:

BOD(10) ≈ 9 mg/L * 0.03125

BOD(10) ≈ 0.28125 mg/L

Therefore, the estimated BOD concentration after 10 days would be approximately 0.28125 mg/L.

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Answer:

The new volume will be 9.24 mL.

Explanation:

Charles's law determines that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases.

So, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

\(\frac{V}{T} =k\)

When studying an initial state 1 and a final state 2, it is satisfied:

\(\frac{V1}{T1} =\frac{V2}{T2}\)

In this case:

Replacing:

\(\frac{8.70 mL}{318.2 K} =\frac{V2}{337.8 K}\)

Solving:

\(V2=337.8K*\frac{8.70 mL}{318.2 K}\)

V2= 9.24 mL

The new volume will be 9.24 mL.

Answer:

down below

Explanation:

NO

H20

P4O10

SO3

1. NO

2. H2O

3. P4O10

4. SO3

An atom X that has 12 protons and 12 electrons, loses 2 electrons to form an ions,  the charge of ion will be X⁺² the number of protons 12 and electrons in the ions is 10.

An atom X has 12 protons and 12 electrons that means X is a neutral atom and the atomic no. is 12 because total no. of protons is equal to atomic number. When it looses the 2 electrons then atom becomes positively charged ion . the charge on the ion is +2.

now, the no. of protons will be = 12

number of electrons will be = 12 - 2 = 10

Thus, An atom X that has 12 protons and 12 electrons, loses 2 electrons to form an ions,  the charge of ion will be X⁺² the number of protons 12 and electrons in the ions is 10.

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Answer:

1363.2 kilocalories

Explanation:

Heat up the ice ==> melt the ice to water ==> heat the water ==> vaporize the water to steam ==> heat the stem 52 degrees to 152

1.81 kg * (spec heat of ice * 19  +* heat of fusion of water + specific heat of water *100 +  heat of vaporization of water + specific heat of steam* 52)

1810 g  * ( .50 cal/g -C * 19 C    +  79.7 cal / g   +  1 cal/g-C  *100C   +  539 cal/g + .48 cal/g * 52 C ) = 1 363 219.6 calories

(check my math)

A debate among scientists on how new species form is based on speciation.

Divergence explains how organisms on Earth are related because it shows how species are similar or different.

Genes play the role in diversity of carrying information that results in changes from one generation to the next.

Natural selection is part of evolution because it explains why attributes are either in existence or have gone extinct.

One of the main debates among scientists on how new species form centers around the concept of speciation. There are two main hypotheses for speciation: allopatric speciation and sympatric speciation.

Divergence is the process by which different populations or species of organisms evolve from a common ancestor over time. This process is responsible for the diversity of life on Earth. By studying the similarities and differences between different organisms, scientists can infer evolutionary relationships.

Genes are the basic units of inheritance that carry information from one generation to the next. They play a crucial role in creating diversity among organisms. The genetic diversity of a population is the result of mutations, gene flow, and genetic drift.

The theory of natural selection is one of the most important and widely accepted explanations for the diversity of life on Earth. It is the process by which certain traits become more or less common in a population over time, depending on their impact on the survival and reproduction of the organisms that possess them.

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The preparation of lead (ii) sulphate from lead (ii) carbonate occurs in two steps:

Lead (ii) carbonate and  lead (ii) sulphate are both insoluble salts of lead.

In order to prepare lead (ii) sulphate, a two step process is performed.

In the first step, Lead (ii) carbonate is reacted with dilute trioxonitrate (v) acid to produce lead (ii) nitrate.

In the second step, dilute sulfuric acid is reacted with the lead (ii) nitrate to produce insoluble lead (ii) sulphate which is filtered and dried.

In conclusion, lead (ii) sulphate is prepared in two steps.

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The synthesis of the following compounds from butanoic acid using reagents from the table can be carried out as follows:

a. Synthesis of 3-hydroxybutanoic acid from butanoic acid using NaBH4 and H3O+ reagents. Synthesis scheme: NaBH4, H3O+

b. Synthesis of butan-1-ol from butanoic acid using LiAlH4 and H3O reagents. Synthesis scheme: LiAlH4, H3O

c. Synthesis of butane from butanoic acid using H2/Pt reagents. Synthesis scheme: H2/Pt

d. Synthesis of butan-1-ol from butanoic acid using BH3/THF and H2O2/NaOH reagents. Synthesis scheme: BH3/THF, H2O2/NaOH

e. Synthesis of butyl bromide from butanoic acid using PBr3 reagent. Synthesis scheme: PBr3Therefore, the correct order of reagents used for the synthesis of the given compounds from butanoic acid are:

a. NaBH4, H3O+b. LiAlH4, H3Oc. H2/Ptd. BH3/THF, H2O2/NaOHe. PBr3

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The maximum work that could be obtained from 5.35 g of zinc metal is calculated as - 17. 3903 kJ

          Zn(s) + Cu²⁺(aq) ---> Zn²⁺ (aq) + Cu(s)

Δ G ° = Δ G° product - Δ G° reactant

         =   - 147 - 65.52

           =  - 212.52 kJ / mole

molar mass of zinc = 65.38 g/ mole

mole of Zn = \(\frac{gram of Zn}{molar mass}\)

                     = 5.35/ 65.38

W = - 212.52 kJ/ mole × 5.35 / 65.38 mole

           =  - 17. 3903 kJ                    

To put it another way, "G" is the change in a system's free energy as it transitions from one initial state (all reactants) to another, final state (all products). The maximum amount of usable energy that can be released (or absorbed) during the transition from the initial to the final state is shown by this value.

"Mass per mole" can be used to describe molar mass. To put it another way, a substance's molar mass is the total mass of all its atoms in one mole's worth. It is quantified in grams per mole.

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The triathlete needs approximately 1580-1650 calories from fat each day. This calculation is based on a total daily calorie requirement of 4500 calories and a fat intake of 25% of total calories. Option D is Correct.

To calculate the calories needed from fat, we first need to determine the percentage of calories that should come from fat. The American Dietetic Association suggests that athletes' diets should consist of 20-35% fat.

Let's assume a moderate fat intake of 25% for our calculation.

Step 1: Calculate the total calories from fat:

Total Calories = 4500 calories/day

Percentage of Calories from Fat = 25%

Calories from Fat = Total Calories x Percentage of Calories from Fat

Calories from Fat = 4500 calories/day x 0.25

Calories from Fat = 1125 calories/day

Step 2: Convert calories to grams of fat:

Since 1 gram of fat contains 9 calories, we can calculate the grams of fat needed by dividing the calories from fat by 9:

Grams of Fat = Calories from Fat / 9

Grams of Fat = 1125 calories / 9

Grams of Fat ≈ 125 grams

The triathlete needs approximately 1580-1650 calories from fat each day. Remember that individual nutritional needs may vary, and it's always recommended to consult a healthcare professional or registered dietitian for personalized advice. Option D is Correct.

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No, the volume of water in a beaker is not an extensive property.

Extensive properties are those that depend on the amount or size of the substance being measured. In other words, they are properties that change with the quantity of the substance. Examples of extensive properties include mass, volume, and total energy.

In the given scenario, the volume of water in the beaker is 50 milliliters. This volume remains the same regardless of the quantity of water present. Whether it's 50 milliliters or 500 milliliters, the volume measurement does not change. Therefore, the volume of water in the beaker is an example of an intensive property.

Intensive properties are independent of the amount or size of the substance. They are characteristics that remain constant regardless of the quantity of the substance. Examples of intensive properties include temperature, density, and color.

It's important to note that the distinction between extensive and intensive properties depends on the specific property being considered. While volume is typically an extensive property for a bulk substance, in the case of a fixed volume of water in a beaker, it becomes an intensive property.

In summary, the volume of water in a beaker is not an extensive property but rather an intensive property because it does not change with the quantity of the substance.

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The hybridization of the central atom in each of the following is :

Beryllium chloride : Be is sp hybridized

Nitrogen dioxide : N atom is sp² hybridized

Carbon tetrachloride : C is sp³ hybridized

Xenon tetrafluoride : Xe is sp³d² hybridized.

The Beryllium chloride hybridization : The central atom is Be and  is sp hybridized.

The Nitrogen dioxide hybridization : the central atom is N and  N atom is sp² hybridized

The Carbon tetrachloride : C is sp³ hybridized. The Xenon tetrafluoride : Xe is sp³d² hybridized.

Thus, The hybridization of the central atom in each of the following is :

Beryllium chloride : Be atom is sp hybridized

Nitrogen dioxide : N atom is sp² hybridized

Carbon tetrachloride : C is sp³ hybridized

Xenon tetrafluoride : Xe is sp³d² hybridized.

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The frequency of this light in Hz is 3.5×10¹⁴

So, the correct answer is A.

The frequency of a certain kind of light with a wavelength of 850 nm can be determined using the formula f=c/λ, where f is the frequency, c is the speed of light and λ is the wavelength.

Substituting the given values, we get f = (2.998×10⁸ m/s)/(850×10⁻⁹m) = 3.53×10¹⁴ Hz.

Therefore, the correct answer is option a, 3.5×10¹⁴ Hz.

It is important to note that the speed of light is a constant value and is typically denoted by the letter "c".

The wavelength and frequency of electromagnetic radiation are inversely proportional, meaning that as the wavelength decreases, the frequency increases. This relationship is known as the wave-particle duality of light and is a fundamental concept in physics.

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completely saturated with salt to freshwater. ... Salt marshes, estuaries, and mangrove forests are each unique ecosystems in ... These areas often serve as nursing grounds where young marine life is ... Several reptiles reside in the salt marsh habitat,

Answer:

physical

Explanation:

The change is physical.

A physical change involves a reversible change to the physical properties of substances, whereas a chemical change involves an irreversible change to the chemical properties of substances through a chemical reaction.

The dissolution of common salt is a physical change because the common salt can be retrieved by evaporating off the water. This is what was manifested by the deposition of common salt crystals on the wick.

Answer:

What is an mass number?

Mass number is an integer (whole number) equal to the sum of the number of protons and neutrons of an atomic nucleus. In other words, it is the sum of the number of nucleons in an atom. Mass number is often denoted using a capital letter A. Contrast this with the atomic number, which is simply the number of protons.

Explanation: